Here are the most recent builds of the Core for Windows.
Only the most recent version will be linked to from here. For earlier builds go to the Advanced Downloads Area and there you will find previous versions.

Newest POL 100 Core beta release
Commit hash = c5984816f13b9d57b6c7bbca4b47b82db739d0fcBe sure you replace all older Core files with the newer version. Also, as a general rule you should recompile all scripts after upgrading the Core.